///* Copyright (c) 2020, Google Inc.
// *
// * Permission to use, copy, modify, and/or distribute this software for any
// * purpose with or without fee is hereby granted, provided that the above
// * copyright notice and this permission notice appear in all copies.
// *
// * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
// * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
// * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
// * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
//
//#include <stdio.h>
//#include <string.h>
//#include <time.h>
//
//#include <algorithm>
//#include <limits>
//#include <string>
//#include <tuple>
//#include <utility>
//#include <vector>
//
//#include <gtest/gtest.h>
//
//#include <openssl/bytestring.h>
//#include <openssl/curve25519.h>
//#include <openssl/evp.h>
//#include <openssl/mem.h>
//#include <openssl/rand.h>
//#include <openssl/sha.h>
//#include <openssl/trust_token.h>
//
//#include "../ec_extra/internal.h"
//#include "../fipsmodule/ec/internal.h"
//#include "../internal.h"
//#include "../test/test_util.h"
//#include "internal.h"
//
//
//BSSL_NAMESPACE_BEGIN
//
//namespace {
//
//TEST(TrustTokenTest, KeyGenExp1) {
//  uint8_t priv_key[TRUST_TOKEN_MAX_PRIVATE_KEY_SIZE];
//  uint8_t pub_key[TRUST_TOKEN_MAX_PUBLIC_KEY_SIZE];
//  size_t priv_key_len, pub_key_len;
//  ASSERT_TRUE(TRUST_TOKEN_generate_key(
//      TRUST_TOKEN_experiment_v1(), priv_key, &priv_key_len,
//      TRUST_TOKEN_MAX_PRIVATE_KEY_SIZE, pub_key, &pub_key_len,
//      TRUST_TOKEN_MAX_PUBLIC_KEY_SIZE, 0x0001));
//  ASSERT_EQ(292u, priv_key_len);
//  ASSERT_EQ(301u, pub_key_len);
//}
//
//// Test that H in |TRUST_TOKEN_experiment_v1| was computed correctly.
//TEST(TrustTokenTest, HExp1) {
//  const EC_GROUP *group = EC_GROUP_new_by_curve_name(NID_secp384r1);
//  ASSERT_TRUE(group);
//
//  const uint8_t kHGen[] = "generator";
//  const uint8_t kHLabel[] = "PMBTokens Experiment V1 HashH";
//
//  bssl::UniquePtr<EC_POINT> expected_h(EC_POINT_new(group));
//  ASSERT_TRUE(expected_h);
//  ASSERT_TRUE(ec_hash_to_curve_p384_xmd_sha512_sswu_draft07(
//      group, &expected_h->raw, kHLabel, sizeof(kHLabel), kHGen, sizeof(kHGen)));
//  uint8_t expected_bytes[1 + 2 * EC_MAX_BYTES];
//  size_t expected_len =
//      EC_POINT_point2oct(group, expected_h.get(), POINT_CONVERSION_UNCOMPRESSED,
//                         expected_bytes, sizeof(expected_bytes), nullptr);
//
//  uint8_t h[97];
//  ASSERT_TRUE(pmbtoken_exp1_get_h_for_testing(h));
//  EXPECT_EQ(Bytes(h), Bytes(expected_bytes, expected_len));
//}
//
//static std::vector<const TRUST_TOKEN_METHOD *> AllMethods() {
//  return {TRUST_TOKEN_experiment_v1()};
//}
//
//class TrustTokenProtocolTestBase : public ::testing::Test {
// public:
//  explicit TrustTokenProtocolTestBase(const TRUST_TOKEN_METHOD *method)
//      : method_(method) {}
//
//  // KeyID returns the key ID associated with key index |i|.
//  static uint32_t KeyID(size_t i) {
//    // Use a different value from the indices to that we do not mix them up.
//    return 7 + i;
//  }
//
//  const TRUST_TOKEN_METHOD *method() { return method_; }
//
// protected:
//  void SetupContexts() {
//    client.reset(TRUST_TOKEN_CLIENT_new(method(), client_max_batchsize));
//    ASSERT_TRUE(client);
//    issuer.reset(TRUST_TOKEN_ISSUER_new(method(), issuer_max_batchsize));
//    ASSERT_TRUE(issuer);
//
//    for (size_t i = 0; i < 3; i++) {
//      uint8_t priv_key[TRUST_TOKEN_MAX_PRIVATE_KEY_SIZE];
//      uint8_t pub_key[TRUST_TOKEN_MAX_PUBLIC_KEY_SIZE];
//      size_t priv_key_len, pub_key_len, key_index;
//      ASSERT_TRUE(TRUST_TOKEN_generate_key(
//          method(), priv_key, &priv_key_len, TRUST_TOKEN_MAX_PRIVATE_KEY_SIZE,
//          pub_key, &pub_key_len, TRUST_TOKEN_MAX_PUBLIC_KEY_SIZE, KeyID(i)));
//      ASSERT_TRUE(TRUST_TOKEN_CLIENT_add_key(client.get(), &key_index, pub_key,
//                                             pub_key_len));
//      ASSERT_EQ(i, key_index);
//      ASSERT_TRUE(
//          TRUST_TOKEN_ISSUER_add_key(issuer.get(), priv_key, priv_key_len));
//    }
//
//    uint8_t public_key[32], private_key[64];
//    ED25519_keypair(public_key, private_key);
//    bssl::UniquePtr<EVP_PKEY> priv(EVP_PKEY_new_raw_private_key(
//        EVP_PKEY_ED25519, nullptr, private_key, 32));
//    ASSERT_TRUE(priv);
//    bssl::UniquePtr<EVP_PKEY> pub(
//        EVP_PKEY_new_raw_public_key(EVP_PKEY_ED25519, nullptr, public_key, 32));
//    ASSERT_TRUE(pub);
//
//    TRUST_TOKEN_CLIENT_set_srr_key(client.get(), pub.get());
//    TRUST_TOKEN_ISSUER_set_srr_key(issuer.get(), priv.get());
//    RAND_bytes(metadata_key, sizeof(metadata_key));
//    ASSERT_TRUE(TRUST_TOKEN_ISSUER_set_metadata_key(issuer.get(), metadata_key,
//                                                    sizeof(metadata_key)));
//  }
//
//  const TRUST_TOKEN_METHOD *method_;
//  uint16_t client_max_batchsize = 10;
//  uint16_t issuer_max_batchsize = 10;
//  bssl::UniquePtr<TRUST_TOKEN_CLIENT> client;
//  bssl::UniquePtr<TRUST_TOKEN_ISSUER> issuer;
//  uint8_t metadata_key[32];
//};
//
//class TrustTokenProtocolTest
//    : public TrustTokenProtocolTestBase,
//      public testing::WithParamInterface<const TRUST_TOKEN_METHOD *> {
// public:
//  TrustTokenProtocolTest() : TrustTokenProtocolTestBase(GetParam()) {}
//};
//
//INSTANTIATE_TEST_SUITE_P(TrustTokenAllProtocolTest, TrustTokenProtocolTest,
//                         testing::ValuesIn(AllMethods()));
//
//TEST_P(TrustTokenProtocolTest, InvalidToken) {
//  ASSERT_NO_FATAL_FAILURE(SetupContexts());
//
//  uint8_t *issue_msg = NULL, *issue_resp = NULL;
//  size_t msg_len, resp_len;
//
//  size_t key_index;
//  size_t tokens_issued;
//  ASSERT_TRUE(
//      TRUST_TOKEN_CLIENT_begin_issuance(client.get(), &issue_msg, &msg_len, 1));
//  bssl::UniquePtr<uint8_t> free_issue_msg(issue_msg);
//  ASSERT_TRUE(TRUST_TOKEN_ISSUER_issue(
//      issuer.get(), &issue_resp, &resp_len, &tokens_issued, issue_msg, msg_len,
//      /*public_metadata=*/KeyID(0), /*private_metadata=*/1,
//      /*max_issuance=*/10));
//  bssl::UniquePtr<uint8_t> free_msg(issue_resp);
//  bssl::UniquePtr<STACK_OF(TRUST_TOKEN)> tokens(
//      TRUST_TOKEN_CLIENT_finish_issuance(client.get(), &key_index, issue_resp,
//                                         resp_len));
//  ASSERT_TRUE(tokens);
//
//  for (TRUST_TOKEN *token : tokens.get()) {
//    // Corrupt the token.
//    token->data[0] ^= 0x42;
//
//    uint8_t *redeem_msg = NULL, *redeem_resp = NULL;
//    ASSERT_TRUE(TRUST_TOKEN_CLIENT_begin_redemption(
//        client.get(), &redeem_msg, &msg_len, token, NULL, 0, 0));
//    bssl::UniquePtr<uint8_t> free_redeem_msg(redeem_msg);
//    TRUST_TOKEN *rtoken;
//    uint8_t *client_data;
//    size_t client_data_len;
//    uint64_t redemption_time;
//    ASSERT_FALSE(TRUST_TOKEN_ISSUER_redeem(
//        issuer.get(), &redeem_resp, &resp_len, &rtoken, &client_data,
//        &client_data_len, &redemption_time, redeem_msg, msg_len, 600));
//    bssl::UniquePtr<uint8_t> free_redeem_resp(redeem_resp);
//  }
//}
//
//TEST_P(TrustTokenProtocolTest, TruncatedIssuanceRequest) {
//  ASSERT_NO_FATAL_FAILURE(SetupContexts());
//
//  uint8_t *issue_msg = NULL, *issue_resp = NULL;
//  size_t msg_len, resp_len;
//  ASSERT_TRUE(TRUST_TOKEN_CLIENT_begin_issuance(client.get(), &issue_msg,
//                                                &msg_len, 10));
//  bssl::UniquePtr<uint8_t> free_issue_msg(issue_msg);
//  msg_len = 10;
//  size_t tokens_issued;
//  ASSERT_FALSE(TRUST_TOKEN_ISSUER_issue(
//      issuer.get(), &issue_resp, &resp_len, &tokens_issued, issue_msg, msg_len,
//      /*public_metadata=*/KeyID(0), /*private_metadata=*/0,
//      /*max_issuance=*/10));
//  bssl::UniquePtr<uint8_t> free_msg(issue_resp);
//}
//
//TEST_P(TrustTokenProtocolTest, TruncatedIssuanceResponse) {
//  ASSERT_NO_FATAL_FAILURE(SetupContexts());
//
//  uint8_t *issue_msg = NULL, *issue_resp = NULL;
//  size_t msg_len, resp_len;
//  ASSERT_TRUE(TRUST_TOKEN_CLIENT_begin_issuance(client.get(), &issue_msg,
//                                                &msg_len, 10));
//  bssl::UniquePtr<uint8_t> free_issue_msg(issue_msg);
//  size_t tokens_issued;
//  ASSERT_TRUE(TRUST_TOKEN_ISSUER_issue(
//      issuer.get(), &issue_resp, &resp_len, &tokens_issued, issue_msg, msg_len,
//      /*public_metadata=*/KeyID(0), /*private_metadata=*/0,
//      /*max_issuance=*/10));
//  bssl::UniquePtr<uint8_t> free_msg(issue_resp);
//  resp_len = 10;
//  size_t key_index;
//  bssl::UniquePtr<STACK_OF(TRUST_TOKEN)> tokens(
//      TRUST_TOKEN_CLIENT_finish_issuance(client.get(), &key_index, issue_resp,
//                                         resp_len));
//  ASSERT_FALSE(tokens);
//}
//
//TEST_P(TrustTokenProtocolTest, ExtraDataIssuanceResponse) {
//  ASSERT_NO_FATAL_FAILURE(SetupContexts());
//
//  uint8_t *request = NULL, *response = NULL;
//  size_t request_len, response_len;
//  ASSERT_TRUE(TRUST_TOKEN_CLIENT_begin_issuance(client.get(), &request,
//                                                &request_len, 10));
//  bssl::UniquePtr<uint8_t> free_request(request);
//  size_t tokens_issued;
//  ASSERT_TRUE(TRUST_TOKEN_ISSUER_issue(issuer.get(), &response, &response_len,
//                                       &tokens_issued, request, request_len,
//                                       /*public_metadata=*/KeyID(0),
//                                       /*private_metadata=*/0,
//                                       /*max_issuance=*/10));
//  bssl::UniquePtr<uint8_t> free_response(response);
//  std::vector<uint8_t> response2(response, response + response_len);
//  response2.push_back(0);
//  size_t key_index;
//  bssl::UniquePtr<STACK_OF(TRUST_TOKEN)> tokens(
//      TRUST_TOKEN_CLIENT_finish_issuance(client.get(), &key_index,
//                                         response2.data(), response2.size()));
//  ASSERT_FALSE(tokens);
//}
//
//TEST_P(TrustTokenProtocolTest, TruncatedRedemptionRequest) {
//  ASSERT_NO_FATAL_FAILURE(SetupContexts());
//
//  uint8_t *issue_msg = NULL, *issue_resp = NULL;
//  size_t msg_len, resp_len;
//  ASSERT_TRUE(TRUST_TOKEN_CLIENT_begin_issuance(client.get(), &issue_msg,
//                                                &msg_len, 10));
//  bssl::UniquePtr<uint8_t> free_issue_msg(issue_msg);
//  size_t tokens_issued;
//  ASSERT_TRUE(TRUST_TOKEN_ISSUER_issue(
//      issuer.get(), &issue_resp, &resp_len, &tokens_issued, issue_msg, msg_len,
//      /*public_metadata=*/KeyID(0), /*private_metadata=*/0,
//      /*max_issuance=*/10));
//  bssl::UniquePtr<uint8_t> free_msg(issue_resp);
//  size_t key_index;
//  bssl::UniquePtr<STACK_OF(TRUST_TOKEN)> tokens(
//      TRUST_TOKEN_CLIENT_finish_issuance(client.get(), &key_index, issue_resp,
//                                         resp_len));
//  ASSERT_TRUE(tokens);
//
//  for (TRUST_TOKEN *token : tokens.get()) {
//    const uint8_t kClientData[] = "\x70TEST CLIENT DATA";
//    uint64_t kRedemptionTime = 13374242;
//
//    uint8_t *redeem_msg = NULL, *redeem_resp = NULL;
//    ASSERT_TRUE(TRUST_TOKEN_CLIENT_begin_redemption(
//        client.get(), &redeem_msg, &msg_len, token, kClientData,
//        sizeof(kClientData) - 1, kRedemptionTime));
//    bssl::UniquePtr<uint8_t> free_redeem_msg(redeem_msg);
//    msg_len = 10;
//
//    TRUST_TOKEN *rtoken;
//    uint8_t *client_data;
//    size_t client_data_len;
//    uint64_t redemption_time;
//    ASSERT_FALSE(TRUST_TOKEN_ISSUER_redeem(
//        issuer.get(), &redeem_resp, &resp_len, &rtoken, &client_data,
//        &client_data_len, &redemption_time, redeem_msg, msg_len, 600));
//  }
//}
//
//TEST_P(TrustTokenProtocolTest, TruncatedRedemptionResponse) {
//  ASSERT_NO_FATAL_FAILURE(SetupContexts());
//
//  uint8_t *issue_msg = NULL, *issue_resp = NULL;
//  size_t msg_len, resp_len;
//  ASSERT_TRUE(TRUST_TOKEN_CLIENT_begin_issuance(client.get(), &issue_msg,
//                                                &msg_len, 10));
//  bssl::UniquePtr<uint8_t> free_issue_msg(issue_msg);
//  size_t tokens_issued;
//  ASSERT_TRUE(TRUST_TOKEN_ISSUER_issue(
//      issuer.get(), &issue_resp, &resp_len, &tokens_issued, issue_msg, msg_len,
//      /*public_metadata=*/KeyID(0), /*private_metadata=*/0,
//      /*max_issuance=*/10));
//  bssl::UniquePtr<uint8_t> free_msg(issue_resp);
//  size_t key_index;
//  bssl::UniquePtr<STACK_OF(TRUST_TOKEN)> tokens(
//      TRUST_TOKEN_CLIENT_finish_issuance(client.get(), &key_index, issue_resp,
//                                         resp_len));
//  ASSERT_TRUE(tokens);
//
//  for (TRUST_TOKEN *token : tokens.get()) {
//    const uint8_t kClientData[] = "\x70TEST CLIENT DATA";
//    uint64_t kRedemptionTime = 13374242;
//
//    uint8_t *redeem_msg = NULL, *redeem_resp = NULL;
//    ASSERT_TRUE(TRUST_TOKEN_CLIENT_begin_redemption(
//        client.get(), &redeem_msg, &msg_len, token, kClientData,
//        sizeof(kClientData) - 1, kRedemptionTime));
//    bssl::UniquePtr<uint8_t> free_redeem_msg(redeem_msg);
//    TRUST_TOKEN *rtoken;
//    uint8_t *client_data;
//    size_t client_data_len;
//    uint64_t redemption_time;
//    ASSERT_TRUE(TRUST_TOKEN_ISSUER_redeem(
//        issuer.get(), &redeem_resp, &resp_len, &rtoken, &client_data,
//        &client_data_len, &redemption_time, redeem_msg, msg_len, 600));
//    bssl::UniquePtr<uint8_t> free_redeem_resp(redeem_resp);
//    bssl::UniquePtr<uint8_t> free_client_data(client_data);
//    bssl::UniquePtr<TRUST_TOKEN> free_rtoken(rtoken);
//
//    ASSERT_EQ(redemption_time, kRedemptionTime);
//    ASSERT_EQ(Bytes(kClientData, sizeof(kClientData) - 1),
//              Bytes(client_data, client_data_len));
//    resp_len = 10;
//
//    uint8_t *srr = NULL, *sig = NULL;
//    size_t srr_len, sig_len;
//    ASSERT_FALSE(TRUST_TOKEN_CLIENT_finish_redemption(
//        client.get(), &srr, &srr_len, &sig, &sig_len, redeem_resp, resp_len));
//    bssl::UniquePtr<uint8_t> free_srr(srr);
//    bssl::UniquePtr<uint8_t> free_sig(sig);
//  }
//}
//
//TEST_P(TrustTokenProtocolTest, IssuedWithBadKeyID) {
//  client.reset(TRUST_TOKEN_CLIENT_new(method(), client_max_batchsize));
//  ASSERT_TRUE(client);
//  issuer.reset(TRUST_TOKEN_ISSUER_new(method(), issuer_max_batchsize));
//  ASSERT_TRUE(issuer);
//
//  // We configure the client and the issuer with different key IDs and test
//  // that the client notices.
//  const uint32_t kClientKeyID = 0;
//  const uint32_t kIssuerKeyID = 42;
//
//  uint8_t priv_key[TRUST_TOKEN_MAX_PRIVATE_KEY_SIZE];
//  uint8_t pub_key[TRUST_TOKEN_MAX_PUBLIC_KEY_SIZE];
//  size_t priv_key_len, pub_key_len, key_index;
//  ASSERT_TRUE(TRUST_TOKEN_generate_key(
//      method(), priv_key, &priv_key_len, TRUST_TOKEN_MAX_PRIVATE_KEY_SIZE,
//      pub_key, &pub_key_len, TRUST_TOKEN_MAX_PUBLIC_KEY_SIZE, kClientKeyID));
//  ASSERT_TRUE(TRUST_TOKEN_CLIENT_add_key(client.get(), &key_index, pub_key,
//                                         pub_key_len));
//  ASSERT_EQ(0UL, key_index);
//
//  ASSERT_TRUE(TRUST_TOKEN_generate_key(
//      method(), priv_key, &priv_key_len, TRUST_TOKEN_MAX_PRIVATE_KEY_SIZE,
//      pub_key, &pub_key_len, TRUST_TOKEN_MAX_PUBLIC_KEY_SIZE, kIssuerKeyID));
//  ASSERT_TRUE(TRUST_TOKEN_ISSUER_add_key(issuer.get(), priv_key, priv_key_len));
//
//
//  uint8_t public_key[32], private_key[64];
//  ED25519_keypair(public_key, private_key);
//  bssl::UniquePtr<EVP_PKEY> priv(
//      EVP_PKEY_new_raw_private_key(EVP_PKEY_ED25519, nullptr, private_key, 32));
//  ASSERT_TRUE(priv);
//  bssl::UniquePtr<EVP_PKEY> pub(
//      EVP_PKEY_new_raw_public_key(EVP_PKEY_ED25519, nullptr, public_key, 32));
//  ASSERT_TRUE(pub);
//
//  TRUST_TOKEN_CLIENT_set_srr_key(client.get(), pub.get());
//  TRUST_TOKEN_ISSUER_set_srr_key(issuer.get(), priv.get());
//  RAND_bytes(metadata_key, sizeof(metadata_key));
//  ASSERT_TRUE(TRUST_TOKEN_ISSUER_set_metadata_key(issuer.get(), metadata_key,
//                                                  sizeof(metadata_key)));
//
//
//  uint8_t *issue_msg = NULL, *issue_resp = NULL;
//  size_t msg_len, resp_len;
//  ASSERT_TRUE(TRUST_TOKEN_CLIENT_begin_issuance(client.get(), &issue_msg,
//                                                &msg_len, 10));
//  bssl::UniquePtr<uint8_t> free_issue_msg(issue_msg);
//  size_t tokens_issued;
//  ASSERT_TRUE(TRUST_TOKEN_ISSUER_issue(
//      issuer.get(), &issue_resp, &resp_len, &tokens_issued, issue_msg, msg_len,
//      /*public_metadata=*/42, /*private_metadata=*/0, /*max_issuance=*/10));
//  bssl::UniquePtr<uint8_t> free_msg(issue_resp);
//  bssl::UniquePtr<STACK_OF(TRUST_TOKEN)> tokens(
//      TRUST_TOKEN_CLIENT_finish_issuance(client.get(), &key_index, issue_resp,
//                                         resp_len));
//  ASSERT_FALSE(tokens);
//}
//
//class TrustTokenMetadataTest
//    : public TrustTokenProtocolTestBase,
//      public testing::WithParamInterface<
//          std::tuple<const TRUST_TOKEN_METHOD *, int, bool>> {
// public:
//  TrustTokenMetadataTest()
//      : TrustTokenProtocolTestBase(std::get<0>(GetParam())) {}
//
//  int public_metadata() { return std::get<1>(GetParam()); }
//  bool private_metadata() { return std::get<2>(GetParam()); }
//};
//
//TEST_P(TrustTokenMetadataTest, SetAndGetMetadata) {
//  ASSERT_NO_FATAL_FAILURE(SetupContexts());
//
//  uint8_t *issue_msg = NULL, *issue_resp = NULL;
//  size_t msg_len, resp_len;
//  ASSERT_TRUE(TRUST_TOKEN_CLIENT_begin_issuance(client.get(), &issue_msg,
//                                                &msg_len, 10));
//  bssl::UniquePtr<uint8_t> free_issue_msg(issue_msg);
//  size_t tokens_issued;
//  ASSERT_TRUE(TRUST_TOKEN_ISSUER_issue(
//      issuer.get(), &issue_resp, &resp_len, &tokens_issued, issue_msg, msg_len,
//      public_metadata(), private_metadata(), /*max_issuance=*/1));
//  bssl::UniquePtr<uint8_t> free_msg(issue_resp);
//  size_t key_index;
//  bssl::UniquePtr<STACK_OF(TRUST_TOKEN)> tokens(
//      TRUST_TOKEN_CLIENT_finish_issuance(client.get(), &key_index, issue_resp,
//                                         resp_len));
//  ASSERT_TRUE(tokens);
//
//  for (TRUST_TOKEN *token : tokens.get()) {
//    const uint8_t kClientData[] = "\x70TEST CLIENT DATA";
//    uint64_t kRedemptionTime = 13374242;
//
//    const uint8_t kExpectedSRR[] =
//        "\xa4\x68\x6d\x65\x74\x61\x64\x61\x74\x61\xa2\x66\x70\x75\x62\x6c\x69"
//        "\x63\x00\x67\x70\x72\x69\x76\x61\x74\x65\x00\x6a\x74\x6f\x6b\x65\x6e"
//        "\x2d\x68\x61\x73\x68\x58\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
//        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
//        "\x00\x00\x00\x00\x00\x6b\x63\x6c\x69\x65\x6e\x74\x2d\x64\x61\x74\x61"
//        "\x70\x54\x45\x53\x54\x20\x43\x4c\x49\x45\x4e\x54\x20\x44\x41\x54\x41"
//        "\x70\x65\x78\x70\x69\x72\x79\x2d\x74\x69\x6d\x65\x73\x74\x61\x6d\x70"
//        "\x1a\x00\xcc\x15\x7a";
//
//    uint8_t *redeem_msg = NULL, *redeem_resp = NULL;
//    ASSERT_TRUE(TRUST_TOKEN_CLIENT_begin_redemption(
//        client.get(), &redeem_msg, &msg_len, token, kClientData,
//        sizeof(kClientData) - 1, kRedemptionTime));
//    bssl::UniquePtr<uint8_t> free_redeem_msg(redeem_msg);
//    TRUST_TOKEN *rtoken;
//    uint8_t *client_data;
//    size_t client_data_len;
//    uint64_t redemption_time;
//    ASSERT_TRUE(TRUST_TOKEN_ISSUER_redeem(
//        issuer.get(), &redeem_resp, &resp_len, &rtoken, &client_data,
//        &client_data_len, &redemption_time, redeem_msg, msg_len, 600));
//    bssl::UniquePtr<uint8_t> free_redeem_resp(redeem_resp);
//    bssl::UniquePtr<uint8_t> free_client_data(client_data);
//    bssl::UniquePtr<TRUST_TOKEN> free_rtoken(rtoken);
//
//    ASSERT_EQ(redemption_time, kRedemptionTime);
//    ASSERT_EQ(Bytes(kClientData, sizeof(kClientData) - 1),
//              Bytes(client_data, client_data_len));
//
//    uint8_t *srr = NULL, *sig = NULL;
//    size_t srr_len, sig_len;
//    ASSERT_TRUE(TRUST_TOKEN_CLIENT_finish_redemption(
//        client.get(), &srr, &srr_len, &sig, &sig_len, redeem_resp, resp_len));
//    bssl::UniquePtr<uint8_t> free_srr(srr);
//    bssl::UniquePtr<uint8_t> free_sig(sig);
//
//    const uint8_t kTokenHashDSTLabel[] = "TrustTokenV0 TokenHash";
//    uint8_t token_hash[SHA256_DIGEST_LENGTH];
//    SHA256_CTX sha_ctx;
//    SHA256_Init(&sha_ctx);
//    SHA256_Update(&sha_ctx, kTokenHashDSTLabel, sizeof(kTokenHashDSTLabel));
//    SHA256_Update(&sha_ctx, token->data, token->len);
//    SHA256_Final(token_hash, &sha_ctx);
//
//    // Check the token hash is in the SRR.
//    ASSERT_EQ(Bytes(token_hash), Bytes(srr + 41, sizeof(token_hash)));
//
//    uint8_t decode_private_metadata;
//    ASSERT_TRUE(TRUST_TOKEN_decode_private_metadata(
//        method(), &decode_private_metadata, metadata_key, sizeof(metadata_key),
//        token_hash, sizeof(token_hash), srr[27]));
//    ASSERT_EQ(srr[18], public_metadata());
//    ASSERT_EQ(decode_private_metadata, private_metadata());
//
//    // Clear out the metadata bits.
//    srr[18] = 0;
//    srr[27] = 0;
//
//    // Clear out the token hash.
//    OPENSSL_memset(srr + 41, 0, sizeof(token_hash));
//
//    ASSERT_EQ(Bytes(kExpectedSRR, sizeof(kExpectedSRR) - 1),
//              Bytes(srr, srr_len));
//  }
//}
//
//TEST_P(TrustTokenMetadataTest, TooManyRequests) {
//  issuer_max_batchsize = 1;
//  ASSERT_NO_FATAL_FAILURE(SetupContexts());
//
//  uint8_t *issue_msg = NULL, *issue_resp = NULL;
//  size_t msg_len, resp_len;
//  ASSERT_TRUE(TRUST_TOKEN_CLIENT_begin_issuance(client.get(), &issue_msg,
//                                                &msg_len, 10));
//  bssl::UniquePtr<uint8_t> free_issue_msg(issue_msg);
//  size_t tokens_issued;
//  ASSERT_TRUE(TRUST_TOKEN_ISSUER_issue(
//      issuer.get(), &issue_resp, &resp_len, &tokens_issued, issue_msg, msg_len,
//      public_metadata(), private_metadata(), /*max_issuance=*/1));
//  bssl::UniquePtr<uint8_t> free_msg(issue_resp);
//  ASSERT_EQ(tokens_issued, issuer_max_batchsize);
//  size_t key_index;
//  bssl::UniquePtr<STACK_OF(TRUST_TOKEN)> tokens(
//      TRUST_TOKEN_CLIENT_finish_issuance(client.get(), &key_index, issue_resp,
//                                         resp_len));
//  ASSERT_TRUE(tokens);
//  ASSERT_EQ(sk_TRUST_TOKEN_num(tokens.get()), 1UL);
//}
//
//
//TEST_P(TrustTokenMetadataTest, TruncatedProof) {
//  ASSERT_NO_FATAL_FAILURE(SetupContexts());
//
//  uint8_t *issue_msg = NULL, *issue_resp = NULL;
//  size_t msg_len, resp_len;
//  ASSERT_TRUE(TRUST_TOKEN_CLIENT_begin_issuance(client.get(), &issue_msg,
//                                                &msg_len, 10));
//  bssl::UniquePtr<uint8_t> free_issue_msg(issue_msg);
//  size_t tokens_issued;
//  ASSERT_TRUE(TRUST_TOKEN_ISSUER_issue(
//      issuer.get(), &issue_resp, &resp_len, &tokens_issued, issue_msg, msg_len,
//      public_metadata(), private_metadata(), /*max_issuance=*/1));
//  bssl::UniquePtr<uint8_t> free_msg(issue_resp);
//
//  CBS real_response;
//  CBS_init(&real_response, issue_resp, resp_len);
//  uint16_t count;
//  uint32_t public_metadata;
//  bssl::ScopedCBB bad_response;
//  ASSERT_TRUE(CBB_init(bad_response.get(), 0));
//  ASSERT_TRUE(CBS_get_u16(&real_response, &count));
//  ASSERT_TRUE(CBB_add_u16(bad_response.get(), count));
//  ASSERT_TRUE(CBS_get_u32(&real_response, &public_metadata));
//  ASSERT_TRUE(CBB_add_u32(bad_response.get(), public_metadata));
//
//  for (size_t i = 0; i < count; i++) {
//    uint8_t s[PMBTOKEN_NONCE_SIZE];
//    CBS tmp;
//    ASSERT_TRUE(CBS_copy_bytes(&real_response, s, PMBTOKEN_NONCE_SIZE));
//    ASSERT_TRUE(CBB_add_bytes(bad_response.get(), s, PMBTOKEN_NONCE_SIZE));
//    ASSERT_TRUE(CBS_get_u16_length_prefixed(&real_response, &tmp));
//    ASSERT_TRUE(CBB_add_u16(bad_response.get(), CBS_len(&tmp)));
//    ASSERT_TRUE(
//        CBB_add_bytes(bad_response.get(), CBS_data(&tmp), CBS_len(&tmp)));
//    ASSERT_TRUE(CBS_get_u16_length_prefixed(&real_response, &tmp));
//    ASSERT_TRUE(CBB_add_u16(bad_response.get(), CBS_len(&tmp)));
//    ASSERT_TRUE(
//        CBB_add_bytes(bad_response.get(), CBS_data(&tmp), CBS_len(&tmp)));
//  }
//
//  CBS tmp;
//  ASSERT_TRUE(CBS_get_u16_length_prefixed(&real_response, &tmp));
//  CBB dleq;
//  ASSERT_TRUE(CBB_add_u16_length_prefixed(bad_response.get(), &dleq));
//  ASSERT_TRUE(CBB_add_bytes(&dleq, CBS_data(&tmp), CBS_len(&tmp) - 2));
//  ASSERT_TRUE(CBB_flush(bad_response.get()));
//
//  uint8_t *bad_buf;
//  size_t bad_len;
//  ASSERT_TRUE(CBB_finish(bad_response.get(), &bad_buf, &bad_len));
//  bssl::UniquePtr<uint8_t> free_bad(bad_buf);
//
//  size_t key_index;
//  bssl::UniquePtr<STACK_OF(TRUST_TOKEN)> tokens(
//      TRUST_TOKEN_CLIENT_finish_issuance(client.get(), &key_index, bad_buf,
//                                         bad_len));
//  ASSERT_FALSE(tokens);
//}
//
//TEST_P(TrustTokenMetadataTest, ExcessDataProof) {
//  ASSERT_NO_FATAL_FAILURE(SetupContexts());
//
//  uint8_t *issue_msg = NULL, *issue_resp = NULL;
//  size_t msg_len, resp_len;
//  ASSERT_TRUE(TRUST_TOKEN_CLIENT_begin_issuance(client.get(), &issue_msg,
//                                                &msg_len, 10));
//  bssl::UniquePtr<uint8_t> free_issue_msg(issue_msg);
//  size_t tokens_issued;
//  ASSERT_TRUE(TRUST_TOKEN_ISSUER_issue(
//      issuer.get(), &issue_resp, &resp_len, &tokens_issued, issue_msg, msg_len,
//      public_metadata(), private_metadata(), /*max_issuance=*/1));
//  bssl::UniquePtr<uint8_t> free_msg(issue_resp);
//
//  CBS real_response;
//  CBS_init(&real_response, issue_resp, resp_len);
//  uint16_t count;
//  uint32_t public_metadata;
//  bssl::ScopedCBB bad_response;
//  ASSERT_TRUE(CBB_init(bad_response.get(), 0));
//  ASSERT_TRUE(CBS_get_u16(&real_response, &count));
//  ASSERT_TRUE(CBB_add_u16(bad_response.get(), count));
//  ASSERT_TRUE(CBS_get_u32(&real_response, &public_metadata));
//  ASSERT_TRUE(CBB_add_u32(bad_response.get(), public_metadata));
//
//  for (size_t i = 0; i < count; i++) {
//    uint8_t s[PMBTOKEN_NONCE_SIZE];
//    CBS tmp;
//    ASSERT_TRUE(CBS_copy_bytes(&real_response, s, PMBTOKEN_NONCE_SIZE));
//    ASSERT_TRUE(CBB_add_bytes(bad_response.get(), s, PMBTOKEN_NONCE_SIZE));
//    ASSERT_TRUE(CBS_get_u16_length_prefixed(&real_response, &tmp));
//    ASSERT_TRUE(CBB_add_u16(bad_response.get(), CBS_len(&tmp)));
//    ASSERT_TRUE(
//        CBB_add_bytes(bad_response.get(), CBS_data(&tmp), CBS_len(&tmp)));
//    ASSERT_TRUE(CBS_get_u16_length_prefixed(&real_response, &tmp));
//    ASSERT_TRUE(CBB_add_u16(bad_response.get(), CBS_len(&tmp)));
//    ASSERT_TRUE(
//        CBB_add_bytes(bad_response.get(), CBS_data(&tmp), CBS_len(&tmp)));
//  }
//
//  CBS tmp;
//  ASSERT_TRUE(CBS_get_u16_length_prefixed(&real_response, &tmp));
//  CBB dleq;
//  ASSERT_TRUE(CBB_add_u16_length_prefixed(bad_response.get(), &dleq));
//  ASSERT_TRUE(CBB_add_bytes(&dleq, CBS_data(&tmp), CBS_len(&tmp)));
//  ASSERT_TRUE(CBB_add_u16(&dleq, 42));
//  ASSERT_TRUE(CBB_flush(bad_response.get()));
//
//  uint8_t *bad_buf;
//  size_t bad_len;
//  ASSERT_TRUE(CBB_finish(bad_response.get(), &bad_buf, &bad_len));
//  bssl::UniquePtr<uint8_t> free_bad(bad_buf);
//
//  size_t key_index;
//  bssl::UniquePtr<STACK_OF(TRUST_TOKEN)> tokens(
//      TRUST_TOKEN_CLIENT_finish_issuance(client.get(), &key_index, bad_buf,
//                                         bad_len));
//  ASSERT_FALSE(tokens);
//}
//
//INSTANTIATE_TEST_SUITE_P(
//    TrustTokenAllMetadataTest, TrustTokenMetadataTest,
//    testing::Combine(testing::ValuesIn(AllMethods()),
//                     testing::Values(TrustTokenProtocolTest::KeyID(0),
//                                     TrustTokenProtocolTest::KeyID(1),
//                                     TrustTokenProtocolTest::KeyID(2)),
//                     testing::Bool()));
//
//class TrustTokenBadKeyTest
//    : public TrustTokenProtocolTestBase,
//      public testing::WithParamInterface<
//          std::tuple<const TRUST_TOKEN_METHOD *, bool, int>> {
// public:
//  TrustTokenBadKeyTest()
//      : TrustTokenProtocolTestBase(std::get<0>(GetParam())) {}
//
//  bool private_metadata() { return std::get<1>(GetParam()); }
//  int corrupted_key() { return std::get<2>(GetParam()); }
//};
//
//TEST_P(TrustTokenBadKeyTest, BadKey) {
//  ASSERT_NO_FATAL_FAILURE(SetupContexts());
//
//  uint8_t *issue_msg = NULL, *issue_resp = NULL;
//  size_t msg_len, resp_len;
//  ASSERT_TRUE(TRUST_TOKEN_CLIENT_begin_issuance(client.get(), &issue_msg,
//                                                &msg_len, 10));
//  bssl::UniquePtr<uint8_t> free_issue_msg(issue_msg);
//
//  struct trust_token_issuer_key_st *key = &issuer->keys[0];
//  EC_SCALAR *scalars[] = {&key->key.x0, &key->key.y0, &key->key.x1,
//                          &key->key.y1, &key->key.xs, &key->key.ys};
//
//  // Corrupt private key scalar.
//  scalars[corrupted_key()]->bytes[0] ^= 42;
//
//  size_t tokens_issued;
//  ASSERT_TRUE(TRUST_TOKEN_ISSUER_issue(
//      issuer.get(), &issue_resp, &resp_len, &tokens_issued, issue_msg, msg_len,
//      /*public_metadata=*/7, private_metadata(), /*max_issuance=*/1));
//  bssl::UniquePtr<uint8_t> free_msg(issue_resp);
//  size_t key_index;
//  bssl::UniquePtr<STACK_OF(TRUST_TOKEN)> tokens(
//      TRUST_TOKEN_CLIENT_finish_issuance(client.get(), &key_index, issue_resp,
//                                         resp_len));
//
//  // If the unused private key is corrupted, then the DLEQ proof should succeed.
//  if ((corrupted_key() / 2 == 0 && private_metadata() == true) ||
//      (corrupted_key() / 2 == 1 && private_metadata() == false)) {
//    ASSERT_TRUE(tokens);
//  } else {
//    ASSERT_FALSE(tokens);
//  }
//}
//
//INSTANTIATE_TEST_SUITE_P(TrustTokenAllBadKeyTest, TrustTokenBadKeyTest,
//                         testing::Combine(testing::ValuesIn(AllMethods()),
//                                          testing::Bool(),
//                                          testing::Values(0, 1, 2, 3, 4, 5)));
//
//}  // namespace
//BSSL_NAMESPACE_END
